copepod

I welcomed Cope pods greatly into my aquarium, they provide a food source for my fish, their are 100's of them everywhere. I've read they are sign of a healthy tank. Is this true?

I'm trying to get a culture of freshwater copepods going for my fish but I can't seem to find any site that sells them live, they're all marine! I've not had very much luck finding them outside either, though it might just be to early in the season.   Anyone know of a site that sells LIVE...